Manufacture of metal casements.



F. H. ORITTALL. MANUFACTURE OF METAL GASEMENTS.

APPLICATION TILED JUNE 22, 1911.

1,025,688. Patented May 7, 1912.

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UNITED sTA Js PATENT OFFICE.

FRANCIS HENRY CRITTALL, 0F BRAINTREE, ENGLAND.

MANUFACTURE OF METAL GASEME NTS.

To all whom it may concern:

Be it known that I, FRANCIS HENRY CRIT- TALL, a subject of the King ofGreat Britain, residing at Manor Works, Braintree, in the county ofEssex, England, have invented new and useful Improvements in theManufacture of Metal Casements, of which the following is aspecification.

The frames of centrally pivoted metal easements have heretofore usuallybeen made either by joining metal plates to continuous bars of suitablesection or else by joining together bars of diflerent sect-ions.

'According to this invention the frames of metal casements are made bycutting away metal from continuous bars. It 1s preferred to employ aspecial section of bar whereby a double joint or closure is obtainedthroughout.

Figure 1 shows a section of this bar from which the whole of theeasement shown in perspective at Fig. 2 is made. In the latter figure ais the fixed frame of the easement and b the pivoted or moving frame.Figs. 3 to 10 are sections on the lines 33 to 1010, Fig. 2, to a largerscale than Fig. 2, but to the same scale as Fig. 1. These sections showthe casement closed, whereas in Fig. 2 it is open, so that in each casethe plane of section is indicated both on the part a and the part b. InFig. 1 different portions of the bar are marked 1 to 5, while in Figs. 3to 10 the corresponding parts arev marked a to a or b to b as the casemay be, so as to show clearly which parts of the bar Fig. l have beencut away in the different places. Figs. 11 and 12 are sections on thelines 1111 and 12--12, Figs. 9 and 10. In Figs. 3, 4 and 5, the part 4of the bar a has been cut away and the parts 2 and 5 of the bar 6. InFigs. 6, 7 and 8 the part 5 of the bar a has been cut away and the parts2 and 4 of the bar 6. In Figs. 9 and 10 the part 5 of the bar a and halfof the part 4 have been cut away and parts 2 and 5 and half part 4 ofthe bars I), 0 and (Z.

Figs. 2, 11 and 12 indicate the points at which half the parts a and 6*respectively begin to be cut away. The drawings do not show the pivotswhich may be of any ordinary description. The junctions of the bars atthe four corners of each frame Specification of Letters Patent.

Application filed June 22, 1911.

Patented May 7, 1912.

Serial No. 634,764.

are welded or brazed in the ordinary manner.

It will be observed that the sides of the fiXed frame of the casementare formed from the blank shown in Fig. 1 by cutting away entirely oneof the flanges 4 or 5. One side of the pivoted member of the casement isformed by cutting away entirely one of the flanges 2 or 3 and one of theflanges 4 or 5 on the same edge of the bar and the other side of thepivoted member is formed by cutting away one of the flanges 4 or 5 atone edge of the bar and one of the flanges 2 or 3 at the opposite edgethereof. To produce either of the top or bottom bars of the fixed orpivoted member of the casement the front flange 4 or 5 is cut away fromone end of the .bar toward the opposite end thereof leaving a portionstanding and then cutting away that part of the rear flange (4 or 5) inrear of the remaining or standing portion of the front flange and alsoan additional portion thereof to leave a clear space for the two membersto cross when open or to assume a parallel position when the casement isclosed. The bars con structed in the manner above specified may beassembled in the usual way, and readily pivoted together to produce acasement having double weathering.

What I claim is 1. The process herein described of manufacturing theside bars of the fixed and pivoted members of a casement which consistsin forming a bar on its longitudinal edges with parallel flangesprojecting from one side of the bar and with longitudinal parallelflanges on its opposite side more widely separated than those firstmentioned, cutting from the bar one of the first mentioned flanges toform the two sides of the fixed member of the casement, cutting from asimilar bar both flanges on one longitudinal edge of the bar to form oneside of the pivotal member of the casement and cutting from a like barone of the flanges at one edge of the bar and an unlike flange at theopposite edge thereof to form the other side of the pivoted member ofthe casement.

2. The process herein described of manufacturing the. top and bottombars of the fixed and pivoted members of a casement,

also an additional portion thereof to pro- Whioh consists in forming abar on its 'londuce an unflanged portion in the bar inter- L0 gitudinaledges with parallel front and rear flanges projecting from one side ofthe bar, mediate its opposite ends.

cuttin away the front flange from one end T 7 r of the bar toward theopposite end thereof FRANCIS HEB R1 CRI 1V1 and then cutting away thatportion of the \Vitnesses:

rear flange in rear of the remaining or J OHN H. THITEHEAD, standingportion of the front flange and H. D. JAMESON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

